Oil-burning furnace.



T; c. MASON.

OIL BURNING PURNAGE.- APPLIOA-TION TILED J A R. 9, 1907.

To all it mag concern;

unirnnsrarss PATENT OFFICE.

*rnonas c; MAsoN,-oF os riNeELEs, CALIFORNIA, ASSIGNOR, [BY MESNE AssieNMEN'rs, TO MASON 'sMoKELEss COMBUSTION COMPANY, or CARSON CITY, NEVADA, A conro RATION OF'NEVADA;

OIL-BURNING FURNACE.

Patented Dec. 1, 1908.

; A pplication flled ianuary t), 1907. Serial No. 351,541.

136a known that I, new c.- Mason, a citizenef theUnited States, residing at the.

city of Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Oil-Burning Furnace, of which the following is a specificat1on.

The main object of the present invention is to provide an oil burning furnace of extreme efficiency, while being smokeless in operation. I a Another object of the inventionis to provide anoil burning furnace which will be practically-noiseless.

Another object of the invention is to provide for regulation or control of the supply 1 of heated air to effect combustion. V Another. object in boiler furnaces, is to prevent wear of the boiler by contraction ue to-,*exposureto cold air; the" present in- "vention providing for supply of air uniformly warmed, before it reachesthe burner.

In the accompanying drawings :--Figure 1, is a vertical section of a boiler setting embodying the invention constituting my present invention; Fig. 2,'isa transverse vertical-section on the line w, M, Fig. 1.

' An externally fired and tubular steam boiler 1, is placed over the fire chamber or combustion chamber 2, which is contained in brick setting consisting of the side. walls 3, and a rear wall 4;; The space at the front of the boiler or furnace is-closed by a front plate..5, and openin and closing doors, such as are usually emp oyed. Adjacent to this front plate there is built or formed under the .boiler a front wall 6, having openings 7,- communicating with the door 8, of the front plate '5, and an arch 9, of fire brick, which extends from one side to the other of the chamber and, from the front of the boiler part way tothe rear of the same. The up;

, per part of this" arch 9, is incontact with the '45 ottom of the boiler 1, as shown at Figs. 1, and 2.

'A floor 10, extends under the front part of v the combustion chamber 2, but preferably at "a higher level, than'the outside floor 11, of the boiler room, said floor being preferably grate or frame 12, resting, on cross walls 13, 14. This floor extends at a slight angle downwardly toward the rear, and its front At each side of thispart of the furnace,

end extends part way under the arch 9, ter minating, however, short of thefront walls 6, of the burner chamber 15, beneath said arch, so that this portion of the burner floor is perforated, leaving between said .front walls and the floor 10, an opening 17, for the fraine12, aforesaid. adjacent to the abutments of the arch 9, there are built over the portion 18, walls 19, which extend inwardly from the side walls 3, somethe supporting grate or directors for causing the air, as it rises from between the grate bars beneath them, to flow inwardly toward, the burner. At the midwidth of this part of the furnace there is an extension 20, from the. front wall 6, of the furnace extending rearwardly over the grate portion 18, and a burner 2l,extends rear wardly above this wall extension and is served by pipes 22, and 23,"respectively, extending through the wall portion 6, aforesaid, and delivering oil and steam to the interior of the burner 21.." Belowthis portion of the combustion chamber there is a space 24, serving as an air inlet space and communicating with the outer air at the front of the furnace through the lower furnace doors 25. A partition is secured within this space, being, or plate .26, attached to the bottom of the grate member or support 12, downwardlyand then forwardly and downwardly parallel to the floor 10, and somewhat separatedtherefrom so as to form a flue or passage leading from the air inlet chamber 24, upwardly between the ends of the partition 26, and'the cross walls 13, and then rear wardly between the partition 26, and floor I 1.0, and then upwardly between the grate bars 18, to communicatewith the combustion chamber. This partition 26, is preferably rotected' or covered by fire brick as indi cated at 27. .The stack or outlet is indicated at 28.

The operation is as follows :-The'oil having been turned on and ignited, is continupassage of air, this openlng being divided by grate bars 18, which may form part of p -what above, the portion 18,, so as to serve as p for example, formed as a pan extending first ally injected into the'burner ch'amber and forms a jet, the burner'bein'g preferably so directed as to cause'the flame to ass at a slight downwardangle while moving rearwardly under the boiler, and directly above vparts, and deterioration '1 our 10, into the tubes within the boiler to the stacl-z 28. This action draws in the air from the air supply chamber 24, the lower furnace doors 25, being opened sufficiently to admit the proper quantity of air, and this air flowing into the air supply chamber forwardly beneath the partition 26, then upwardly between said partition 26, and the cross wall 13, then rearwardly over the partition 26, and below the-floor 10, then upwardly through the grate portion 1 thus coming into the burner chamber directly beneath aiid in front of the burner. The heat of the furnace soon warms all these parts in such manner that the'air in thus passing to the burner is warmed before. it reaches the burner, and it is found in practice that, with this construction, smokeless combustion is secured in a manner that is not possible with .1 burner in which the air has direct access ii the front of thefurnace to "the burner. reever, the irregular character of the i prevents, in a large degree, undula-v 3; action of the air such asis causedwhen free or direct passage of air to -the from the front of the furnace, and tie noise as may occur is deadened by having to pass through this irregular passage.

-By opening or clos'inglthe lower front doorsof the furnaceit is'possiblc to accurately adjust or control the amount of air admitted so as to furnish just suflicient for perfect combustion either with a small flame or with a large flame. As the air is uniformly warmed in traversing the passage aforesaid, and as the burner chamber above it is in contact with the boiler,1-it follows that the boiler is not subjected to-currents of cold air which would be liable to cause contraction, warping and straining of the,

of the boiler.

1. An oil burning furnace comprising a combustion chamber, a burner chamber at set forth.

the front end of said combustion chamber, a rearwardly directed burner in saidburner chamber, the floor of the burner chamber having openings therein to supply air, deflectors at the sides of the burner chamber, a partition beneathrsaid openings, an air inlet chamber beneath the partition.

2. An oil burning furnace com rising a combustion chamber, aburner cham er at the front end of said combustion chamber, a rearwardly directed burner in said burner cham: ber,-t'he floor ofgthe burner chamber having openings therein to supply air, deflectors at the sides of the burner chamber, a partition beneath said openings, an air inlet chamber beneath the partition, and means for controlling the passage of air into saidair inlet chamber from the outside, substantially as 3. An oil burning furnace comprising a combustion chamber, a burner chamber at the front end thereof, a rearwardly. directed burner in said burner chamber, deflectors at the sides of the burner chamber, said com-. bustion chamber having a rearwardly inclined floor, said burner chamber, having an opening at the forward end of said floor, a

partition extending from thebottom of the combustion chamber downwardly, then rearwardly :under the floor of the-combustion chamber and an air inletchamber beneath said partition communicating with .the burner thrpugh the passage formed between said partition and the floor ofthe combustion chamber and through-the-opening in the floor of the burner chamber, substan tially as setforth.

In testimony whereof, I have hereunto set my hand atLos: Angeles, Oalifornia,-'this 28th day of December 1906.

I v THOMAS C. MASON. In presence ofi ARTHUR P. KNIGHT, I FRANK L. A. GRAHAM. 

